1·But the conflict of the right in the sale of apartments is inevitable, there is a puzzledom in the sale of apartments.
但商品房买卖中利益相关各方权利冲突是无法避免的，由此导致了商品房买卖中的权利困境。
2·Save an enchanted realm of the darkness in 4 Elements - Puzzledom!
保存了入迷的境界中的黑暗4要素-困境！
3·Puzzledom in developing mineral resources, advantages and application status of microbial metallurgy are elaborated. Research status and direction of biotechnology in hydrometallurgy is discussed.
阐述了矿产资源开发领域的困境、微生物冶金技术的优点和应用现状，介绍了生物技术在湿法冶金领域的研究状况和研究趋势。